[Twisted-Python] Notes on switching twisted to new zope.interface code

[James Y Knight]

One more thing:

Before we have the next release of Twisted, all classes in Twisted that 
declare their implemented interfaecs using __implements__ *must* be 
replaced by the z.i.implements()/backwardsCompatImplements pair. If we 
don't do this, we can't tell third parties to use the zope.interfaces 
functionality directly.

The t.p.c.implements() should also be replaced in order to not have 
DeprecationWarnings spew from twisted itself, but that isn't quite so 
important.

James